This circuit was found in a Popular Electronics from the 90s. It is based on components still common today and an optical coupler for the triac. The sensor is a thermistor.
We found this circuit in a 1990s documentation. The circuit uses components from the era providing...
This circuit was obtained in a technical documentation on SCRs of 1976. The circuit can be...
This circuit of an EDN divides the input pulse frequency by even values. The circuit is TTL and...